Forensic investigative genetic genealogy (FIGG) has emerged as a significant tool in solving various violent crimes, including murders and sexual assaults. This investigative method utilizes data from a combination of private laboratories and unregulated websites like FamilyTree, which allow users to opt into or out of police searches. Currently, around 1.5 million DNA profiles are available for law enforcement to access, but this number is not sufficient to ensure matches in all cases.
To contribute to the expansion of available profiles, a community event in Springfield, Massachusetts, organized by District Attorney Anthony D. Gulluni, offered free FamilyTree DNA tests at a local hockey game. Participants were encouraged to submit their DNA samples in hopes of aiding in the resolution of cold cases. This initiative aimed to increase the pool of DNA and thereby enhance the chances of solving unresolved crimes.
The process relies on the genetic connections between relatives; individuals share approximately 50% of their DNA with parents and varying degrees with more distant relatives. Upon receiving my FamilyTree report, it was noted that my DNA matched with over 3,300 individuals in the database.
However, the use of FIGG is not without controversy. Some individuals express concern regarding privacy and the implications of sharing genetic material, especially those opposed to punitive measures such as the death penalty. Despite these concerns, experts suggest that if a significant percentage—estimated at around 2% or 6 million people—of the U.S. population participates, the potential to resolve crime scene DNA cases could increase dramatically, given the extensive network of familial connections. This raises questions about the balance between privacy rights and public safety in the context of genetic genealogy.
Source: https://www.technologyreview.com/2025/08/22/1122315/i-gave-police-access-to-my-dna/